From: Matt Corallo <git@bluematt.me>
Date: Tue, 21 May 2019 15:19:06 +0000 (-0400)
Subject: Preallocate the header maps
X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=dnsseed-rust;a=commitdiff_plain;h=07be8b3a993efca917fd415b8d97200d1eedb2e6

Preallocate the header maps
---

diff --git a/src/main.rs b/src/main.rs
index e040b95..be4c8fc 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -310,8 +310,8 @@ fn main() {
 		return;
 	}
 
-	unsafe { HEADER_MAP = Some(Box::new(Mutex::new(HashMap::new()))) };
-	unsafe { HEIGHT_MAP = Some(Box::new(Mutex::new(HashMap::new()))) };
+	unsafe { HEADER_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
+	unsafe { HEIGHT_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
 	unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap().insert(genesis_block(Network::Bitcoin).bitcoin_hash(), 0);
 	unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap().insert(0, genesis_block(Network::Bitcoin).bitcoin_hash());
 	unsafe { HIGHEST_HEADER = Some(Box::new(Mutex::new((genesis_block(Network::Bitcoin).bitcoin_hash(), 0)))) };